Localize sound waves

Hello.
I have three sets of sound waves: original files, localized ru (which are equal to original) and localized en. Localized sound waves are in L10N/en and L10N/ru folders. Localizations to Package are set to English (global) and Russian (Russia, also tried global), default culture is en. However, in packaged build I have only English sound.
Also I have two sets of textures: original files and localized en (no ru localization). They work perfect after level reloading. Tried the same for sound waves (original and only one localization), but still it doesn’t work. How can I make sound waves localization work?
PS: please, don’t suggest to use dialogue system.
PS2: if there is no localized sound wave asset, it plays original file (that’s convenient behaviour, I believe)

Do you know when the sound waves are being loaded, and at what level they’re kept alive? Does the issue also happen if you start the game using -culture=en set on the command line?

Do you know when the sound waves are being loaded, and at what level they’re kept alive?
No idea. How can I track this? Only thing I can say now is that I call sounds not directly, but from data sheets.
Does the issue also happen if you start the game using -culture=en set on the command line?
I’ve made a shortcut and added -culture=en after .exe. Did I got you right? If so, it has no effect. Also =ru-RU doesn’t start game with rus assets.

New info: noticed that some sounds are localized and that’s not because of assets’ presence. I’ll keep digging.

Maybe I should have mentioned that I use that node for localization:

228384-снимок.png